checkpoint-example.js

var dat = ...
var dataset = dat.dataset('great-data')

// add some data
dataset.put('hello', 'world')
dataset.batch([{
  type: 'put',
  key: 'more',
  value: 'data'
}, {
  ...
}])

// will insert a node in the graph pointing to the current head with this message
dat.checkpoint('I did some stuff and things should work now')

dat.createCheckpointStream()
  .on('data', function (data) {
    console.log(data) // {message: 'I did some stuff and things should work now', head: 'deadbeaf'}
  })

var checkout = dat.checkout('deadbeaf') // checkouts the above "checkpoint"